CryptoCourier (Gryfto)

Send crypto to your friends and family as easy as sending an email.

Project Overview

Gryfto streamlines onboarding by enabling users to gift crypto via email. It creates wallets automatically for recipients, leverages Privy for account abstraction and authentication, and subsidizes gas fees to deliver a smooth first‑time user experience.

Key Features

  • Email‑based crypto gifting flow
  • Automatic wallet creation for recipients
  • Privy‑powered auth and account abstraction
  • Gas fee subsidization for first‑time users
  • Simple onboarding UX tailored for non‑crypto users

Project Details

Duration

November 2024 - January 2025

Team Size

2 members

🏢

Company

Lampros Tech

👤

Role

Full‑stack Blockchain Developer

Links

View Source Code

Technologies Used

Frontend

Next.jsReactTypeScriptTailwindCSS

Backend

Next.js API RoutesRelayersSmart Contract

Web3

PrivyEthers.jsViem

Email

SendGrid

Infrastructure

Vercel

Challenges

  • Reducing onboarding friction for non‑crypto users
  • Securing email‑initiated gifting flows
  • Handling gas fees without overwhelming users

Solutions

  • Integrated Privy for abstracted wallets and auth
  • Used SendGrid for secure email delivery
  • Implemented sponsored transactions for low‑friction onboarding

Impact & Results

<60s
Onboarding Time
From invite email to auto‑created wallet and first login
99%
Email Deliverability
Verified sender + SendGrid improves inbox placement
<2m
Time to First Gift
Average sender‑to‑recipient completion time

Key Achievements

  • Implemented Privy auth and automatic wallet creation
  • Designed email gifting flow with secure claim process
  • Added gas subsidization to simplify first‑time transactions
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